Android - MMS Image Size
Overwiew
If you want to adjust the size of images when sending MMS messages, this feature will be useful. By default, the image size is set to Medium.
To customize this setting:
1. Go to Settings
Open the Settings through the drawer menu.
2. Go to Advanced Settings
Scroll down to the bottom and tap on Show Advanced Settings.
3. Set Image Size
In the SMS/MMS Settings section, find MMS Image Size and tap on it.
In the dropdown list, select the desired image size for sending in MMS messages.